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wdenk38635852002-08-27 05:55:31 +00001/*
2 * (C) Copyright 2001
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * RTC, Date & Time support: get and set date & time
26 */
27#include <common.h>
28#include <command.h>
29#include <rtc.h>
Stefan Roese0dc018e2007-02-20 10:51:26 +010030#include <i2c.h>
wdenk38635852002-08-27 05:55:31 +000031
Wolfgang Denkd87080b2006-03-31 18:32:53 +020032DECLARE_GLOBAL_DATA_PTR;
33
wdenk38635852002-08-27 05:55:31 +000034const char *weekdays[] = {
35 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
36};
37
wdenk3e386912003-04-05 00:53:31 +000038#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
39
wdenk38635852002-08-27 05:55:31 +000040int mk_date (char *, struct rtc_time *);
41
42int do_date (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
43{
44 struct rtc_time tm;
45 int rcode = 0;
Stefan Roese0dc018e2007-02-20 10:51:26 +010046 int old_bus;
47
48 /* switch to correct I2C bus */
49 old_bus = I2C_GET_BUS();
50 I2C_SET_BUS(CFG_RTC_BUS_NUM);
wdenk38635852002-08-27 05:55:31 +000051
52 switch (argc) {
53 case 2: /* set date & time */
54 if (strcmp(argv[1],"reset") == 0) {
wdenk4b9206e2004-03-23 22:14:11 +000055 puts ("Reset RTC...\n");
wdenk38635852002-08-27 05:55:31 +000056 rtc_reset ();
57 } else {
58 /* initialize tm with current time */
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020059 rcode = rtc_get (&tm);
60
61 if(!rcode) {
62 /* insert new date & time */
63 if (mk_date (argv[1], &tm) != 0) {
64 puts ("## Bad date format\n");
65 break;
66 }
67 /* and write to RTC */
68 rcode = rtc_set (&tm);
69 if(rcode)
70 puts("## Set date failled\n");
71 } else {
72 puts("## Get date failled\n");
wdenk38635852002-08-27 05:55:31 +000073 }
wdenk38635852002-08-27 05:55:31 +000074 }
75 /* FALL TROUGH */
76 case 1: /* get date & time */
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020077 rcode = rtc_get (&tm);
78
79 if (rcode) {
80 puts("## Get date failled\n");
81 break;
82 }
wdenk38635852002-08-27 05:55:31 +000083
84 printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
85 tm.tm_year, tm.tm_mon, tm.tm_mday,
86 (tm.tm_wday<0 || tm.tm_wday>6) ?
wdenk3e386912003-04-05 00:53:31 +000087 "unknown " : RELOC(weekdays[tm.tm_wday]),
wdenk38635852002-08-27 05:55:31 +000088 tm.tm_hour, tm.tm_min, tm.tm_sec);
89
Stefan Roese0dc018e2007-02-20 10:51:26 +010090 break;
wdenk38635852002-08-27 05:55:31 +000091 default:
92 printf ("Usage:\n%s\n", cmdtp->usage);
93 rcode = 1;
94 }
Stefan Roese0dc018e2007-02-20 10:51:26 +010095
96 /* switch back to original I2C bus */
97 I2C_SET_BUS(old_bus);
98
wdenk38635852002-08-27 05:55:31 +000099 return rcode;
100}
101
102/*
103 * simple conversion of two-digit string with error checking
104 */
105static int cnvrt2 (char *str, int *valp)
106{
107 int val;
108
109 if ((*str < '0') || (*str > '9'))
110 return (-1);
111
112 val = *str - '0';
113
114 ++str;
115
116 if ((*str < '0') || (*str > '9'))
117 return (-1);
118
119 *valp = 10 * val + (*str - '0');
120
121 return (0);
122}
123
124/*
125 * Convert date string: MMDDhhmm[[CC]YY][.ss]
126 *
127 * Some basic checking for valid values is done, but this will not catch
128 * all possible error conditions.
129 */
130int mk_date (char *datestr, struct rtc_time *tmp)
131{
132 int len, val;
133 char *ptr;
134
135 ptr = strchr (datestr,'.');
136 len = strlen (datestr);
137
138 /* Set seconds */
139 if (ptr) {
140 int sec;
141
142 *ptr++ = '\0';
143 if ((len - (ptr - datestr)) != 2)
144 return (-1);
145
146 len = strlen (datestr);
147
148 if (cnvrt2 (ptr, &sec))
149 return (-1);
150
151 tmp->tm_sec = sec;
152 } else {
153 tmp->tm_sec = 0;
154 }
155
156 if (len == 12) { /* MMDDhhmmCCYY */
157 int year, century;
158
159 if (cnvrt2 (datestr+ 8, &century) ||
160 cnvrt2 (datestr+10, &year) ) {
161 return (-1);
162 }
163 tmp->tm_year = 100 * century + year;
164 } else if (len == 10) { /* MMDDhhmmYY */
165 int year, century;
166
167 century = tmp->tm_year / 100;
168 if (cnvrt2 (datestr+ 8, &year))
169 return (-1);
170 tmp->tm_year = 100 * century + year;
171 }
172
173 switch (len) {
174 case 8: /* MMDDhhmm */
175 /* fall thru */
176 case 10: /* MMDDhhmmYY */
177 /* fall thru */
178 case 12: /* MMDDhhmmCCYY */
179 if (cnvrt2 (datestr+0, &val) ||
180 val > 12) {
181 break;
182 }
183 tmp->tm_mon = val;
184 if (cnvrt2 (datestr+2, &val) ||
185 val > ((tmp->tm_mon==2) ? 29 : 31)) {
186 break;
187 }
188 tmp->tm_mday = val;
189
190 if (cnvrt2 (datestr+4, &val) ||
191 val > 23) {
192 break;
193 }
194 tmp->tm_hour = val;
195
196 if (cnvrt2 (datestr+6, &val) ||
197 val > 59) {
198 break;
199 }
200 tmp->tm_min = val;
201
202 /* calculate day of week */
203 GregorianDay (tmp);
204
205 return (0);
206 default:
207 break;
208 }
209
210 return (-1);
211}
212
wdenk8bde7f72003-06-27 21:31:46 +0000213/***************************************************/
214
wdenk0d498392003-07-01 21:06:45 +0000215U_BOOT_CMD(
216 date, 2, 1, do_date,
wdenk8bde7f72003-06-27 21:31:46 +0000217 "date - get/set/reset date & time\n",
218 "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
219 " - without arguments: print date & time\n"
220 " - with numeric argument: set the system date & time\n"
221 " - with 'reset' argument: reset the RTC\n"
222);